Complete analysis of all B→πK decays

The Standard Model (SM) predicts that $\Delta A_{\rm CP}$, the difference between direct CP asymmetries for modes $B^+\to \pi^0 K^+$ and $B^0\to \pi^- are related by weak isospin, should be close to zero. There has been a recent claim LHCb Collaboration measured value of CP}$ shows an uncomfortable tension with SM prediction, almost at $8\sigma$ level. Motivated this claim, we critically re-examine data on all $B\to \pi K$ modes, including CP-averaged branching fractions. From combined Bayesian analysis topological amplitudes their phases as free parameters, find best-fit region large overlap parameter space favoured in SM, albeit some enhancement electroweak penguin colour-suppressed tree amplitudes, consistent findings earlier studies. We SM-like region, is more than 5$\sigma$ away from zero global average, well result, within $2\sigma$. Thus conclude there not yet enough motivation go beyond SM.